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| author | Hans-Peter Nilsson <hp@axis.com> | 2023-02-18 05:19:21 +0100 |
|---|---|---|
| committer | Hans-Peter Nilsson <hp@bitrange.com> | 2023-05-04 02:43:26 +0200 |
| commit | e88d9e826ee68219dd4dbb2c0d8bdaee0a864301 (patch) | |
| tree | fd3fbdc01bec34568d95f392d9f4eec3079470f0 /gcc | |
| parent | 9525daf0fbc5c836ee028f5b58612857de7da51d (diff) | |
| download | gcc-e88d9e826ee68219dd4dbb2c0d8bdaee0a864301.zip gcc-e88d9e826ee68219dd4dbb2c0d8bdaee0a864301.tar.gz gcc-e88d9e826ee68219dd4dbb2c0d8bdaee0a864301.tar.bz2 | |
CRIS-LRA: Define TARGET_SPILL_CLASS
This has no effect on arith-rand-ll (which suffers badly from LRA) and
marginal effects (0.01% improvement) on coremark, but the size of
coremark shrinks by 0.2%. An earlier version was tested with a tree
around 2023-03 which showed (marginally) that ALL_REGS is preferable
to GENERAL_REGS.
* config/cris/cris.cc (TARGET_SPILL_CLASS): Define
to ALL_REGS.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/cris/cris.cc | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/gcc/config/cris/cris.cc b/gcc/config/cris/cris.cc index 3013e01..496a1a0 100644 --- a/gcc/config/cris/cris.cc +++ b/gcc/config/cris/cris.cc @@ -134,6 +134,7 @@ static void cris_init_libfuncs (void); static unsigned int cris_postdbr_cmpelim (void); static reg_class_t cris_preferred_reload_class (rtx, reg_class_t); +static reg_class_t cris_spill_class (reg_class_t, machine_mode); static int cris_register_move_cost (machine_mode, reg_class_t, reg_class_t); static int cris_memory_move_cost (machine_mode, reg_class_t, bool); @@ -221,6 +222,9 @@ int cris_cpu_version = CRIS_DEFAULT_CPU_VERSION; #undef TARGET_PREFERRED_RELOAD_CLASS #define TARGET_PREFERRED_RELOAD_CLASS cris_preferred_reload_class +#undef TARGET_SPILL_CLASS +#define TARGET_SPILL_CLASS cris_spill_class + /* We don't define TARGET_FIXED_CONDITION_CODE_REGS, as at the time of this writing, it has an effect only on pre-reload CSE and when scheduling (and for "macro fusion" at that). Neither applies for @@ -1681,6 +1685,14 @@ cris_preferred_reload_class (rtx x, reg_class_t rclass) return rclass; } +/* Worker function for TARGET_SPILL_CLASS. */ + +static reg_class_t +cris_spill_class (reg_class_t /* orig_class */, machine_mode) +{ + return ALL_REGS; +} + /* Worker function for TARGET_REGISTER_MOVE_COST. */ static int |